Apparatus for molding cement blocks.



I A. RING. APPARATUS FOR MOLDING CEMENT BLOCKS. APPLICATION FILED rmzs, 1910.

Patented Feb. 21, 1911.

ANDREW RING, OF DUBUQUE, IOWA.

APPARATUS FOR MOLDING CEMENT BLOCKS.

asaoes.

Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed April 23, 1910. Serial No. 557,256.

To all whom it may concern:

Be it known that I, ANDREW RING, citizen of the United States, residing at Dubuque, in the county of Dubuque andState of Iowa, have invented certain new and useful Improvements in Apparatus for Molding Cement Blocks, of which the following is a specification.

My invention relates to devices for molding cementblocks, and it relates particularly to a molding device whereby cement blocks adapted to interlock with eachother may be quickly and economically molded.

Among the objects in view is to produce a device of the character described which will be of extremely simple and inexpensive construction and efficient in operation.

The invention consists in the novel construotion, arrangement and combination of parts as hereinafter fully described, illustrated in the accompanying drawings and pointed out in. the appended claims.

In the drawings :-Figure 1 is a perspective view, partly broken away, of my im proved molding device, showing the same in its closed or molding position. Fig. 2 is a similar view showing the device in. open position for the removal of the cement block. Fig. 3 is a perspective view of one of the blocks produced by my machine. Figs. 4 and 5 are perspective views of corner blocks. Fig. 6 is a perspective view showing a portion of a wall constructed of blocks produced by my machine.

In carrying out my invention I provide a suitable supporting frame or table A. The mold proper comprises the verticallyarranged member or wall G which is, preferably, fixedly mounted on the horizontal beams K of the frame A. The member G is cut away at its lateral edges so as to leave the curved edges G and straight or plane edges G G one of the edges G being provided with a groove G and the other edge G being provided with a tenon or lip G*..

G indicates a movable or swinging member of the mold, comprising the member G, integral with or secured to the member G When the mold is in its closed or molding position the member G occupies a horizontal position forming the floor of the mold, and the member G standing vertically. The member G is secured upon a horizontally arranged rod J pivotally mounted in bearings J and secured in proper position as by collars h secured by set screws 11 to the rod J. The rod J carries an operating handle J by which the rod may be turned. By means of the rod and its operating handle the member G may be swung from the closed position seen in Fig. 1 into the open position seen in Fig. 2. The member G is cut away at its lateral edges to form curved edges M and straight edges 1 7 M The curvature of the edges M corresponds to that of the edges G on member G.

G is a tenon or lip formed on member G on its edge M while G is a groove formed in the edge G, said tenon and groove corresponding to the tenon and groove of the member G.

M, M indicate the remaining members of the mold, each comprising sections M M preferably hinged together as at M F indicate two metallic straps secured to each of the members M M and hinged as at F to the beams K.

By the described construction the sections M may when desired, be swung outwardly on their hinges M, and the sections may also be swung outwardly by swinging the straps F on their hinges F, as seen in Fig. 2.

The sections l 3 are so shaped as to present curved portions M and the straight portions M The curvature of the portions M corresponds with the curvature of the edges l 6 of sections G and when the mold is closed, the curved portions of sections M lie against the said curved edges M and the straight portions M lie against the straight edges G M of sections G G7.

The sections l 2 are shaped so as to lie against the straight edges M when the mold is closed and the groove N in one of the sections 1 2 receives the tenons G G while the tenon or lip N in the other section M enters the groovesG G.

The member G is provided with an opening G through which a correspondinglyshaped mandrel or form B may be inserted, extending across the mold and up against the member G whereby when the cement is filled into the mold, an air passage, as 0, will be formed within the cement block.

The mold proper is left open at the top whereby cement may be readily introduced, said cement being preferably carried within a receptacle P resting upon the frame, a suitable chute 1? being provided for the transfer of the cement from the receptacle to the mold.

The mold proper may be constructed of any suitable materials, but I preferably construct the members M M of sheet iron,- of about one-eighth or three-sixteenths of an inch in thickness.

hen blocks are to be molded, the various members of the mold proper are closed together, as seen in Fig. 1, and a mandrel R having been inserted through opening G the cement is filled in, and after being allowed to partially set, the mandrel is removed and then the member h 7 1s swung outwardly by'means of rod J, Carrying with it the partially hardened block which rests l on the member G; after the block has been sufficiently dried it may be removed and the mold again closed for molding another block. -The block S, seen more plainly in F i 3, as

produced by my device, will have the particular confi uration seen in said F1 3. 1t having the air passage 0, tenon O, on one side,

the groove 0 on theopposite side, and the plane faces O O and faces 0 When the blocksare set up in a wall, for

O and curved instance, as seen in Fig. 6, the blocks will interlock. Furthermore, the addltlonal air o'assa 'es 0 will be formed by the curved in'various sizes accordingly.

' ing the sides of the mold, one of whichmem faces 0 of two adjacent blocks and the plane face O of a'third adjacent block. In Figs. 4 and 5 I show corner blocks inn dicated by T and II respectively, The said corner blocks are produced by simply passing a dividing plate down through the partially set block'while the latter is stillin the mold, the block T is about three-fo-urths thesize of the complete, full-sized block S v seen in Fig. 8, and having only one curved face T and groove T and aperture T while the block U is only about one-half the size of the block S and havingbut one curved face U and groove U 1 By the described configuration of the blocks produced by my device, a very'strong wall will be produced, and, furthermore, by

the formation of the various air passages, dampness will be prevented from gaming access to the interior of the structure.

The blocks may be made of various sizes, ilS' ClGSlIGCl, the moldgbemg, of course, made f hat I claim is :o r 1. In an apparatus of the character described the combination with a supporting frame, of a mold comprising four cooperatlngrectangularly arranged members formbers form a receptacle to receive the mate to be molded, one of the pivoted members osite to the fixed member consistand in the other lateral edge with a groove,

the various grooves and tenons being disposed and adapted to interlock substantially in the manner set forth when the side members are closed together inthe molding position.

2. In an apparatus of the character described the combination with a supporting frame, of a mold comprising four cooperating rectangularly-arranged members forming the sides of the mold, one of which memhers is fixed and theother members being pivotally mounted at their lower ends, and

all the members being arranged relatively to each other so that when the pivoted members are swung upwardly the various members form a receptacle to receive the material to be molded, one ofthe pivoted members opposite to the fixed --member consisting of two right-angularly arranged inte ral sections one of which is adapted to floor of the; mold when the latter in molding position and the other pivoted members being arranged opposite to each other and each consisting of an upper and a lower section pivoted horizontally together, one of the upper pivoted sections being provided with a horizontal groove and the other with a horizontal tenon and the lower pivoted sections having curved portions andalso having horizontal plane portions, the said fixed side member of the mold and the pivoted side member opposite thereto being each provided at one side with vertical plane edges and intermediate curved edges and a groove intermediate one of said curved edges and the adjacent plane edge, and at the other side with vertical plane edgesland intermediate curved edges and a terionintermediate one of the latter plane edges and Form the the adjacent curved edge, the various side members being adapted to be brought. into a position relatively to each other with the various tenons and grooves interlocking, substantially in the manner set forth.

In testimony whereof I afiix mysignature in presence of two witnesses.

ANDREW RING.

,Witnesses: v

F. W. CoA'rEs, L. LINDENBERG. 

